It was wide spread series of unofficial ceasefires along the Western Front of WW1 around Christmas.
IT AFFECTED THEM BY THE WARS WE HAVE FOUGHT WITH THEM
He maintained power through a combination of fear and massive propaganda.
Nelson Mandela helped end apartheid, so A is incorrect. B would be right, but the white population is the minority in South Africa, not the majority. It ended in 1991, so C is not right. This leaves us with D, the correct answer. I hope this helps!